302 ENTOMOLOGICAL SOCIETY 



Parasite. Host. Reference. 



Polysphincta tuberosa. Spider Ibid. 



Acrodactjla degener... .Two sp. of spider O. P. Cambridge, The 



Entomologist, XV. 



Pezomachus corruptor.Agalena brunnea nests. .. Gir. et Lab., loc. cit., 402. 



Pezomachus cursitans. Spider cocoons Brischke, loc. cit. 



Pezomachus fasciatus. .Spider cocoons Ibid., Kirch., loc. cit., 59. 



Pezomachus fasciatus. .Agalena brunnea nests. ..Gir. et Lab., loc. cit., 



Snellen, loc. cit., 20, 

 Kirchner, loc. cit.,6i. 



Pezomachus fasciatus.. Theridion sp Cambridge, loc. c/V.,XIV, 



137- 



Pezomachus instabilis. Aranea Ratz.,/0c. ctt. 



Pezomachus proximus. Agalena brunnea cocoons Gir. etLab., loc. ctt. 



Pezomachus vagans Spider's nest... Bridg., loc. cit., XV. 



Pezomachus zonatus.... Agalena brunnea cocoons Gir. et Lab., loc. ctt., 403. 



Pezomachus zonatus.. ..Spider cocoons Brischke, loc. cit. 



Macrocentrus linearis. .Spider cocoon Gir. et Lab., loc. cit. ,^12. 



Microgasteraranearum Aranea Ratz., loc. cit. 



Microgasterperspicuus Aranea Ibid. 



MicrogasterdeprimatorSpider cocoon Brischke, loc. cit. 



Pteromalus ater Aranea Ratz., loc. cit. 



Pteromalus punctatus. Aranea Ibid. 



Entomacis, 2 spp Spider's cofcoon A. Fdrster, Hymenop- 



terologische Studien, 

 II, 123. 



EXPLANATION TO PLATE. 



Fig. i. Polysphincta (Zatypota^) dictynce How.: a, adult; b, larva at 

 tached in natural position to spider enlarged (from Insect Life). 



Fig. 2. Bceus americanus How. ; female greatly enlarged (same source). 



Fig. 3. Acoloides saitidis How. ; female, enlarged, showing wing veins, 

 $ antenna and side view of meso- and metanotum still more enlarged 

 (same source). 



Mr. Ashmead remarked that he had seen mites of the genus 

 Bryobia in spider cocoons, but did not know whether they were 

 there as parasites or hibernating. Mr. Howard thought that 

 they must be hibernating, as Bryobia is a vegetable feeder. Mr. 

 Marlatt said that Bryobia could not be a parasite, but crowded 

 into any convenient place to hibernate. He further remarked 

 that he had often opened spider cocoons soon after they were 



